A drug is a substance which has a discernible physiological effect when taken into the body. These chemicals change the functions of the central nervous system (CNS), providing temporary relief from m...
This means that it requires less energy to hear kHz frequencies Our ears are most sensitive to hearing 3. KHz as this is the resonance frequency of our ear canals Range of frequencies we are sensitive...
They will also hear words, and sounds and will not understand or know what the sounds may be. But not until they are taught they will not know or understand how important these senses will be in life ...